LEASES (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease right-of-use-assets	$ 18,383	$ 19,712	$ 17,200
Operating lease liabilities - current	3,417	3,643
Operating lease liabilities - non-current	15,546	16,664
Total operating lease liabilities	$ 18,963	$ 20,307	$ 18,000
Weighted Average Remaining Lease Term (in years)
Operating leases	5 years 6 months	5 years 10 months 24 days
Weighted Average Discount Rate
Operating leases	4.02%	4.00%